84 lines
3.2 KiB
C
84 lines
3.2 KiB
C
/*
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* @brief 32-bit Timer/PWM control functions
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*
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* @note
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* Copyright(C) NXP Semiconductors, 2012
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* All rights reserved.
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*
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* @par
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* LPC products. This software is supplied "AS IS" without any warranties of
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* any kind, and NXP Semiconductors and its licensor disclaim any and
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* all warranties, express or implied, including all implied warranties of
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* merchantability, fitness for a particular purpose and non-infringement of
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* intellectual property rights. NXP Semiconductors assumes no responsibility
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* or liability for the use of the software, conveys no license or rights under any
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* patent, copyright, mask work right, or any other intellectual property rights in
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* or to any products. NXP Semiconductors reserves the right to make changes
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* in the software without notification. NXP Semiconductors also makes no
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* representation or warranty that such application will be suitable for the
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* specified use without further testing or modification.
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*
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* @par
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors' and its
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* licensor's relevant copyrights in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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*/
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#include "timer_001.h"
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/*****************************************************************************
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* Private types/enumerations/variables
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****************************************************************************/
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/*****************************************************************************
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* Public types/enumerations/variables
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****************************************************************************/
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/*****************************************************************************
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* Private functions
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****************************************************************************/
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/*****************************************************************************
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* Public functions
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****************************************************************************/
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/* Resets the timer terminal and prescale counts to 0 */
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void IP_TIMER_Reset(IP_TIMER_001_Type *timer)
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{
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uint32_t reg;
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/* Disable timer, set terminal count to non-0 */
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reg = timer->TCR;
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timer->TCR = 0;
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timer->TC = 1;
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/* Reset timer counter */
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timer->TCR = TIMER_RESET;
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/* Wait for terminal count to clear */
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while (timer->TC != 0) {}
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/* Restore timer state */
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timer->TCR = reg;
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}
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/* Sets external match control (MATn.matchnum) pin control */
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void IP_TIMER_ExtMatchControlSet(IP_TIMER_001_Type *timer, int8_t initial_state,
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IP_TIMER_PIN_MATCH_STATE_Type matchState, int8_t matchnum)
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{
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timer->EMR = (((uint32_t) initial_state) << matchnum) |
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(((uint32_t) matchState) << (4 + (matchnum * 2)));
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}
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/* Sets timer count source and edge with the selected passed from CapSrc */
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void IP_TIMER_SetTimerClockSrc(IP_TIMER_001_Type *timer,
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IP_TIMER_CAP_SRC_STATE_Type capSrc, int8_t capnum)
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{
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timer->CTCR = (uint32_t) capSrc | ((uint32_t) capnum) << 2;
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}
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